package edu.nps.moves.dis;

import java.util.*;
import java.io.*;

/**
 * Used in the UA pdu; ties together an emmitter and a location. This requires
 * manual cleanup; the beam data should not be attached to each emitter system.
 *
 * Copyright (c) 2008-2016, MOVES Institute, Naval Postgraduate School. All
 * rights reserved. This work is licensed under the BSD open source license,
 * available at https://www.movesinstitute.org/licenses/bsd.html
 *
 * @author DMcG
 */
public class AcousticEmitterSystemData extends Object implements Serializable {

    /**
     * Length of emitter system data
     */
    protected short emitterSystemDataLength;

    /**
     * Number of beams
     */
    protected short numberOfBeams;

    /**
     * padding
     */
    protected int pad2;

    /**
     * This field shall specify the system for a particular UA emitter.
     */
    protected AcousticEmitterSystem acousticEmitterSystem = new AcousticEmitterSystem();

    /**
     * Represents the location wrt the entity
     */
    protected Vector3Float emitterLocation = new Vector3Float();

    /**
     * For each beam in numberOfBeams, an emitter system. This is not right--the
     * beam records need to be at the end of the PDU, rather than attached to
     * each system.
     */
    protected List< AcousticBeamData> beamRecords = new ArrayList< AcousticBeamData>();

    /**
     * Constructor
     */
    public AcousticEmitterSystemData() {
    }

    public int getMarshalledSize() {
        int marshalSize = 0;

        marshalSize = marshalSize + 1;  // emitterSystemDataLength
        marshalSize = marshalSize + 1;  // numberOfBeams
        marshalSize = marshalSize + 2;  // pad2
        marshalSize = marshalSize + acousticEmitterSystem.getMarshalledSize();  // acousticEmitterSystem
        marshalSize = marshalSize + emitterLocation.getMarshalledSize();  // emitterLocation
        for (int idx = 0; idx < beamRecords.size(); idx++) {
            AcousticBeamData listElement = beamRecords.get(idx);
            marshalSize = marshalSize + listElement.getMarshalledSize();
        }

        return marshalSize;
    }

    public void setEmitterSystemDataLength(short pEmitterSystemDataLength) {
        emitterSystemDataLength = pEmitterSystemDataLength;
    }

    public short getEmitterSystemDataLength() {
        return emitterSystemDataLength;
    }

    public short getNumberOfBeams() {
        return (short) beamRecords.size();
    }

    /**
     * Note that setting this value will not change the marshalled value. The
     * list whose length this describes is used for that purpose. The
     * getnumberOfBeams method will also be based on the actual list length
     * rather than this value. The method is simply here for java bean
     * completeness.
     */
    public void setNumberOfBeams(short pNumberOfBeams) {
        numberOfBeams = pNumberOfBeams;
    }

    public void setPad2(int pPad2) {
        pad2 = pPad2;
    }

    public int getPad2() {
        return pad2;
    }

    public void setAcousticEmitterSystem(AcousticEmitterSystem pAcousticEmitterSystem) {
        acousticEmitterSystem = pAcousticEmitterSystem;
    }

    public AcousticEmitterSystem getAcousticEmitterSystem() {
        return acousticEmitterSystem;
    }

    public void setEmitterLocation(Vector3Float pEmitterLocation) {
        emitterLocation = pEmitterLocation;
    }

    public Vector3Float getEmitterLocation() {
        return emitterLocation;
    }

    public void setBeamRecords(List<AcousticBeamData> pBeamRecords) {
        beamRecords = pBeamRecords;
    }

    public List<AcousticBeamData> getBeamRecords() {
        return beamRecords;
    }

    /**
     * Packs a Pdu into the ByteBuffer.
     *
     * @throws java.nio.BufferOverflowException if buff is too small
     * @throws java.nio.ReadOnlyBufferException if buff is read only
     * @see java.nio.ByteBuffer
     * @param buff The ByteBuffer at the position to begin writing
     * @since ??
     */
    public void marshal(java.nio.ByteBuffer buff) {
        buff.put((byte) emitterSystemDataLength);
        buff.put((byte) beamRecords.size());
        buff.putShort((short) pad2);
        acousticEmitterSystem.marshal(buff);
        emitterLocation.marshal(buff);

        for (int idx = 0; idx < beamRecords.size(); idx++) {
            AcousticBeamData aAcousticBeamData = (AcousticBeamData) beamRecords.get(idx);
            aAcousticBeamData.marshal(buff);
        } // end of list marshalling

    } // end of marshal method

    /**
     * Unpacks a Pdu from the underlying data.
     *
     * @throws java.nio.BufferUnderflowException if buff is too small
     * @see java.nio.ByteBuffer
     * @param buff The ByteBuffer at the position to begin reading
     * @since ??
     */
    public void unmarshal(java.nio.ByteBuffer buff) {
        emitterSystemDataLength = (short) (buff.get() & 0xFF);
        numberOfBeams = (short) (buff.get() & 0xFF);
        pad2 = (int) (buff.getShort() & 0xFFFF);
        acousticEmitterSystem.unmarshal(buff);
        emitterLocation.unmarshal(buff);
        for (int idx = 0; idx < numberOfBeams; idx++) {
            AcousticBeamData anX = new AcousticBeamData();
            anX.unmarshal(buff);
            beamRecords.add(anX);
        }

    } // end of unmarshal method 


    /*
  * The equals method doesn't always work--mostly it works only on classes that consist only of primitives. Be careful.
     */
    @Override
    public boolean equals(Object obj) {

        if (this == obj) {
            return true;
        }

        if (obj == null) {
            return false;
        }

        if (getClass() != obj.getClass()) {
            return false;
        }

        return equalsImpl(obj);
    }

    /**
     * Compare all fields that contribute to the state, ignoring transient and
     * static fields, for <code>this</code> and the supplied object
     *
     * @param obj the object to compare to
     * @return true if the objects are equal, false otherwise.
     */
    public boolean equalsImpl(Object obj) {
        boolean ivarsEqual = true;

        if (!(obj instanceof AcousticEmitterSystemData)) {
            return false;
        }

        final AcousticEmitterSystemData rhs = (AcousticEmitterSystemData) obj;

        if (!(emitterSystemDataLength == rhs.emitterSystemDataLength)) {
            ivarsEqual = false;
        }
        if (!(numberOfBeams == rhs.numberOfBeams)) {
            ivarsEqual = false;
        }
        if (!(pad2 == rhs.pad2)) {
            ivarsEqual = false;
        }
        if (!(acousticEmitterSystem.equals(rhs.acousticEmitterSystem))) {
            ivarsEqual = false;
        }
        if (!(emitterLocation.equals(rhs.emitterLocation))) {
            ivarsEqual = false;
        }

        for (int idx = 0; idx < beamRecords.size(); idx++) {
            if (!(beamRecords.get(idx).equals(rhs.beamRecords.get(idx)))) {
                ivarsEqual = false;
            }
        }

        return ivarsEqual;
    }
} // end of class
